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Model comparison

GPT-5.4 mini vs GPT-5.4 Pro

Data verified

Head-to-head evidence from 6 shared benchmark results across 4 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

Sibling matchup inside the GPT-5.4 family.

56.77/100
Margin
4.1pts
winning →
60.89/100
0 category wins4 category wins

Public leaderboard positions: GPT-5.4 mini #75 (Estimated); GPT-5.4 Pro #44 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. GPT-5.4 mini and GPT-5.4 Pro share 6 comparable benchmark results. 4 of 8 categories are comparable. 24 results are unique to GPT-5.4 mini; 6 to GPT-5.4 Pro.

Updated July 23, 2026
Shared results
6
GPT-5.4 mini only
24
GPT-5.4 Pro only
6
Comparable categories
4 / 8

GPT-5.4 mini makes more sense if you want the cheaper token bill, while GPT-5.4 Pro is the cleaner fit if mathematics is the priority or you need the larger 1.05M context window.

Confidence note. This is a partial-evidence comparison with 6 shared benchmark results across 4 evidence categories; 4 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

GPT-5.4 mini and GPT-5.4 Pro sit in the same GPT-5.4 family. This page is less about two unrelated model lineages and more about how the siblings trade off on benchmark shape, token costs, and practical limits like context window.

GPT-5.4 Pro is clearly ahead on the BenchAlign aggregate, 60.89 to 56.77. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

GPT-5.4 Pro's sharpest advantage is in mathematics, where it averages 46.9 against 21.7. The single biggest benchmark swing on the page is FrontierMath v2 (Tier 4), 2.080% to 37.500%.

GPT-5.4 Pro is also the more expensive model on tokens at $30.00 input / $180.00 output per 1M tokens, versus $0.75 input / $4.50 output per 1M tokens for GPT-5.4 mini. That is roughly 40.0x on output cost alone. GPT-5.4 Pro gives you the larger context window at 1.05M, compared with 400K for GPT-5.4 mini.

Category breakdown

Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.

Category scores and score margins for GPT-5.4 mini and GPT-5.4 Pro
CategoryGPT-5.4 miniΔGPT-5.4 Pro
MathGPT-5.4 mini21.7Margin→ 25.2GPT-5.4 Pro46.9
AgenticGPT-5.4 mini65.7Margin→ 23.6GPT-5.4 Pro89.3
MultimodalGPT-5.4 mini76.6Margin→ 17.4GPT-5.4 Pro94.0
KnowledgeGPT-5.4 mini47.8Margin→ 10.9GPT-5.4 Pro58.7
ReasoningGPT-5.4 miniNot measuredMarginNo overlapGPT-5.4 Pro83.3

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · GPT-5.4 miniB · GPT-5.4 Pro

  1. FrontierMath v2 (Tier 4)

    Math
    Source ↗
    A 2.080%B 37.500%
    Winner: GPT-5.4 ProΔ 35.4
    FrontierMath v2 (Tier 4): GPT-5.4 mini scored 2.080%; GPT-5.4 Pro scored 37.500%. GPT-5.4 Pro wins this benchmark.

  2. FrontierMath v2 (Tiers 1-3)

    Math
    Source ↗
    A 28.280%B 50.000%
    Winner: GPT-5.4 ProΔ 21.7
    FrontierMath v2 (Tiers 1-3): GPT-5.4 mini scored 28.280%; GPT-5.4 Pro scored 50.000%. GPT-5.4 Pro wins this benchmark.

  3. MMMU-Pro

    Multimodal
    Source ↗
    A 76.6%B 94%
    Winner: GPT-5.4 ProΔ 17.4
    MMMU-Pro: GPT-5.4 mini scored 76.6%; GPT-5.4 Pro scored 94%. GPT-5.4 Pro wins this benchmark.

  4. HLE

    Knowledge
    Source ↗
    A 41.5%B 58.7%
    Winner: GPT-5.4 ProΔ 17.2
    HLE: GPT-5.4 mini scored 41.5%; GPT-5.4 Pro scored 58.7%. GPT-5.4 Pro wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricGPT-5.4 miniGPT-5.4 ProComparison
Input / output priceUSD per 1M tokensGPT-5.4 mini$0.75 input / $4.5 outputGPT-5.4 Pro$30 input / $180 outputGPT-5.4 mini has the lower combined listed price.
Generation speedtokens per secondGPT-5.4 mini201 tok/sGPT-5.4 Pro74 tok/sGPT-5.4 mini has the higher measured throughput.
First-answer latencyseconds to first tokenGPT-5.4 mini3.85 sGPT-5.4 Pro151.79 sGPT-5.4 mini reaches the first token sooner.
Context windowmaximum listed tokensGPT-5.4 mini400KGPT-5.4 Pro1.05MGPT-5.4 Pro lists the larger context window.

Benchmark Deep Dive

AgenticGPT-5.4 Pro wins
BenchmarkGPT-5.4 miniGPT-5.4 ProResult
Terminal-Bench 2.0Source 60%—Not comparable
OSWorld-VerifiedSource 72.1%—Not comparable
MCP AtlasSource 57.7%—Not comparable
ToolathlonSource 42.9%—Not comparable
τ²-bench resultsSource 83.3%—Not comparable
AA Agentic IndexSource 30.2%—Not comparable
APEX-Agents-AASource 28.2%—Not comparable
GDPval-AASource 33.6%—Not comparable
GDPval-AASource 1171—Not comparable
BrowseCompSource —89.3%Not comparable
Coding
BenchmarkGPT-5.4 miniGPT-5.4 ProResult
Vibe Code BenchSource 47.97%—Not comparable
AA Coding IndexSource 56.1%—Not comparable
AA-SciCodeSource 49.9%—Not comparable
FrontierCode 1.1 MainSource 27.0%—Not comparable
Reasoning
BenchmarkGPT-5.4 miniGPT-5.4 ProResult
AA-LCRSource 69.3%—Not comparable
CritPtSource 10.0%30.0%GPT-5.4 Pro leads
ARC-AGI-2Source —83.3%Not comparable
KnowledgeGPT-5.4 Pro wins
BenchmarkGPT-5.4 miniGPT-5.4 ProResult
GPQASource 88%—Not comparable
HLESource 41.5%58.7%GPT-5.4 Pro leads
HLE w/o toolsSource 28.2%42.7%GPT-5.4 Pro leads
Artificial Analysis Intelligence IndexSource 40.0%—Not comparable
AA-GPQA DiamondSource 87.5%—Not comparable
AA-HLESource 26.6%—Not comparable
AA-Omniscience IndexSource -18.7%—Not comparable
AA-Omniscience AccuracySource 37.5%—Not comparable
AA-Omniscience Hallucination RateSource 89.8%—Not comparable
FrontierScienceSource —36.7%Not comparable
FrontierScience ResearchSource —36.7%Not comparable
MathGPT-5.4 Pro wins
BenchmarkGPT-5.4 miniGPT-5.4 ProResult
FrontierMath v2 (Tiers 1-3)Source 28.280%50.000%GPT-5.4 Pro leads
FrontierMath v2 (Tier 4)Source 2.080%37.500%GPT-5.4 Pro leads
IPhO 2025 (Theory)Source —93.5%Not comparable
FrontierMath (legacy)Source —50%Not comparable
MultimodalGPT-5.4 Pro wins
BenchmarkGPT-5.4 miniGPT-5.4 ProResult
MMMU-ProSource 76.6%94%GPT-5.4 Pro leads
MMMU-Pro w/ PythonSource 78%—Not comparable
AA-MMMU-ProSource 73.3%—Not comparable
Inst. Following
BenchmarkGPT-5.4 miniGPT-5.4 ProResult
AA-IFBenchSource 73.3%—Not comparable
Frequently Asked Questions (5)

Which is better, GPT-5.4 mini or GPT-5.4 Pro?

GPT-5.4 mini and GPT-5.4 Pro are sibling variants in the GPT-5.4 family, so the right pick depends on whether you value the better benchmark line, cheaper tokens, or the larger context window. GPT-5.4 Pro is ahead on BenchLM's BenchAlign leaderboard 60.89 to 56.77.

Which is better for knowledge tasks, GPT-5.4 mini or GPT-5.4 Pro?

GPT-5.4 Pro has the edge for knowledge tasks in this comparison, averaging 58.7 versus 47.8. Inside this category, HLE is the benchmark that creates the most daylight between them.

Which is better for math, GPT-5.4 mini or GPT-5.4 Pro?

GPT-5.4 Pro has the edge for math in this comparison, averaging 46.9 versus 21.7. Inside this category, FrontierMath v2 (Tier 4) is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, GPT-5.4 mini or GPT-5.4 Pro?

GPT-5.4 Pro has the edge for agentic tasks in this comparison, averaging 89.3 versus 65.7. GPT-5.4 mini stays close enough that the answer can still flip depending on your workload.

Which is better for multimodal and grounded tasks, GPT-5.4 mini or GPT-5.4 Pro?

GPT-5.4 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 94 versus 76.6. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

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